AR33.25-G-0650-02F | Assemble hub reduction gear | Front axle 737.910 | |
Danger! | Risk of injury to skin and eyes caused by handling hot or glowing objects. | Wear safety gloves, protective clothing and safety glasses, if necessary. |
Modification notes
Steering knuckle
Number | Designation | Front axle 737.910 | ||
BA33.25-N-1004-01G | Bolt to track and steering arm to steering knuckle | M241.5 | Nm | - |
M181.5 | Nm | - | ||
M201.5 | Nm | 450 | ||
M121.5 | Nm | 100 | ||
Front axle hub drive
Number | Designation | Front axle | |
BA33.25-N-1001-02A | Bolt, wheel hub drive to steering knuckle | Nm | 120 |
BA33.25-N-1002-02A | Bolt, input gear to double-joint propeller shaft | Nm | 200 |
435 589 01 31 00
Assembly tool
Blocking device
Basic drift
Assembly tool
406 589 04 15 00
437 589 01 43 00
437 589 02 43 00
Repair materials
Number | Designation | Order number |
BR00.45-Z-1015-01A | Loctite 5203 sealant | A 002 989 71 20 10 |
BR00.45-Z-1001-06A | Long-life grease | A 000 989 63 51 11 |
G33.25-3250-01
G33.25-3216-01
G33.25-3219-01
1 Mount oil thrower (19) to driven gear (14).
The narrow side of the oil thrower (19) must face towards the gear of the driven gear (14).
2 Mount thrust plate (14.1) on output gear (14).
The groove of the thrust plate (14.1) must point toward the cylindrical roller bearing (17).
3 Install cylindrical roller bearing (17) in hub reduction gear housing (4).
The cylindrical roller bearing (17) must be installed all the way to the end stop.
4 Place output gear (14) into hub reduction gear housing (4) from rear and install in cylindrical roller bearing (17).
G33.25-3222-01
5 Determine the difference between the bearing seat (arrow) in the steering knuckle (18) as well as the protrusion of the cylindrical roller bearing (17) in the hub reduction gear housing (4) using a depth micrometer.
Make sure that the cylindrical roller bearing (17) is installed all the way to the end stop, as otherwise a faulty measurement may be made.
Note the determined value for the thickness of the shims.
G33.25-3223-01
6 Insert the determined shims for the bearing seat (arrow) and cylindrical roller bearing (17) at the bottom of the steering knuckle (18).
7 Coat gearing on drive shaft using long-life grease.
G33.25-3249-01
8 Coat cylindrical roller bearing (9) with long-life grease and install in hub reduction gear housing (4).
9 Install shims, ABS rotor (11) and retaining ring (10).
Make sure that the driven gear (14) is installed up the end stop in the cylindrical roller bearing (17), as otherwise the a faulty measurement may be made.
The retaining ring (10) must be fitted with zero clearance, fit shims under
ABS rotor (11).
Determine the number of shims used with the old ABS rotor (11) and then install the new ABS rotor (11). An ABS rotor (11) may only be used 1 time.
G33.25-3214-01
10 Position cylindrical roller bearing (15) with assembly ring (16) on driven gear (14).
Assembly ring (16) is included in the repair kit of the new cylindrical roller bearing (15).
Shown on a removed driven gear (14)
G33.25-3235-01
11 Using
basic drift and
assembly tool, install cylindrical roller bearing (15) in hub reduction gear housing (4).
To prevent the rollers from falling out, do not remove the assembly ring (16) until the cylindrical roller bearing (15) has been installed.
G33.25-3234-01
12 Coat sealing ring (12) with long-life grease and install in hub reduction gear housing (4) using assembly tool.
G33.25-3248-03
G33.25-3224-01
13 Press cylindrical roller bearing (7) and spacer ring (8) onto drive gear (5).
Before pressing on with a hot plate heat up cylindrical roller bearing (7) and spacer ring (8) to max. 80 °C.
G33.25-3228-01
14 Insert drive gear (5) all the way into steering knuckle (18).
The drive gear (5) is only inserted for measurement purposes.
G33.25-3231-01
15 Determine the difference between the bearing seat in the steering knuckle (18) as well as the protrusion of the cylindrical roller bearing (7) in the hub reduction gear housing (4) using a depth micrometer.
Note value for the thickness of the shims.
16 Remove drive gear (5) again.
17 Install shims for bearing seat and cylindrical roller bearing (7) in the steering knuckle (18).
Observe noted value for thickness of the shims.
G33.25-3225-01
18 Install drive gear (5).
19 Lock the drive gear (5) using the blocking device and tighten the bolt (6).
Replace bolt (6) Otherwise damage may occur to the hub reduction gear.
G33.25-3246-01
20 Coat contact surface on hub gear reduction housing (4) and bolts (3) and both bolts with hexagon socket of steering knuckle arm or steering arm with sealant.
G33.25-3249-01
21 Coat rollers of cylindrical roller bearing (9) with long-life grease and then position the rollers of the cylindrical roller bearing (9) on the outer bearing race.
22 Mount hub reduction gear housing (4) and tighten bolts (3) as well as both bolts using hexagon socket of steering knuckle arm or steering arm .
Center the hub reduction gear housing (4) on the bearing seat using the bolts (3).
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